A new redox phloroglucinol additive incorporated gel polymer electrolyte for flexible symmetrical solid-state supercapacitors

Abstract

A novel redox gel polymer electrolyte based on redox additive, phloroglucinol, incorporated PVA–LiClO4 and graphene nanosheet-based electrodes for symmetrical supercapacitors.

Performance enhancement of gel polymer electrolytes using sulfonated poly(ether ether ketone) for supercapacitors

“…However, ionic conductivity of PAA/SPEEK‐9% decreased slightly with the further increase of SPEEK content due to the negative impact of the rigidity of SPEEK chains which suppressed the movements of PAA chains during ionic transport. The highest ionic conductivity value was that of PAA/SPEEK‐7% at 100 ± 1.57 mS cm −1 , which was comparable to that of GPEs containing KCl and LiClO 4 reported in the literature 11,13 …”

“…To obtain suitable GPEs for supercapacitors, two strategies have been adopted. One strategy is to design and produce new GPEs 5–12 . Liu et al 5 .…”

Assessing Strong Consistency of Symmetrical Solid-state Supercapacitors Based on Three-dimensional Porous Carbon Material

“…The electrochemical measurements of the supercapacitors and electrode including CV, EIS and GCD were carried out by electrochemical workstation (Zahner Zenium, Germany). For obtaining the value of the speci c capacitance (F g − 1 ) from the GCD curve, the calculation equation [4,5] is: where I (A) is the discharge current, ∆t (s) is the discharge time, m (g) is the mass of active material and ∆V is the width of the potential window for a full discharge.…”

“…The electrochemical characterization of the symmetrical SSCs was performed in a two-electrode con guration. The speci c capacitance for the supercapacitors is calculated by [4,5]:…”

“…The biomass materials are gradually replacing fossil fuels to become the promising materials in the context of exhausted fossil fuels. Nowadays, the biomass derived porous carbon is centrally researched for energy storage as fuel cell, batteries and supercapacitors due to abundant source, easy harvesting and stable output [1][2][3][4][5]. Among them, the porous carbon materials for the electrodes in the supercapacitors have attracted intensive research recently due to replace the commercial activated carbon from charcoal with low conductivity, low speci c surface area and negative effects on the environment.…”